Add a new ImageInfoSpecificQCow2 type as a subtype of ImageInfoSpecific.
This contains the compatibility level as a string and an optional
lazy_refcounts boolean (optional means mandatory for compat >= 1.1 and
not available for compat == 0.10).
Also, add qcow2_get_specific_info, which returns this information.
Signed-off-by: Max Reitz <mre...@redhat.com>
---
block/qcow2.c | 19 +++++++++++++++++++
qapi-schema.json | 16 ++++++++++++++++
2 files changed, 35 insertions(+)
diff --git a/block/qcow2.c b/block/qcow2.c
index 318d95d..f080a8a 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -1810,6 +1810,24 @@ static int qcow2_get_info(BlockDriverState *bs,
BlockDriverInfo *bdi)
return 0;
}
+static ImageInfoSpecific *qcow2_get_specific_info(BlockDriverState *bs)
+{
+ BDRVQcowState *s = bs->opaque;
+ ImageInfoSpecific *spec_info = g_new0(ImageInfoSpecific, 1);
+
+ spec_info->kind = IMAGE_INFO_SPECIFIC_KIND_QCOW2;
+ spec_info->qcow2 = g_new0(ImageInfoSpecificQCow2, 1);
+ if (s->qcow_version == 2) {
+ spec_info->qcow2->compat = g_strdup("0.10");
+ } else if (s->qcow_version == 3) {
+ spec_info->qcow2->compat = g_strdup("1.1");
+ spec_info->qcow2->lazy_refcounts = s->use_lazy_refcounts;
+ spec_info->qcow2->has_lazy_refcounts = true;
+ }
+
+ return spec_info;
+}
+
#if 0
static void dump_refcounts(BlockDriverState *bs)
{
@@ -2130,6 +2148,7 @@ static BlockDriver bdrv_qcow2 = {
.bdrv_snapshot_list = qcow2_snapshot_list,
.bdrv_snapshot_load_tmp = qcow2_snapshot_load_tmp,
.bdrv_get_info = qcow2_get_info,
+ .bdrv_get_specific_info = qcow2_get_specific_info,
.bdrv_save_vmstate = qcow2_save_vmstate,
.bdrv_load_vmstate = qcow2_load_vmstate,
diff --git a/qapi-schema.json b/qapi-schema.json
index cbad705..d697da2 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -210,6 +210,21 @@
'vm-clock-sec': 'int', 'vm-clock-nsec': 'int' } }
##
+# @ImageInfoSpecificQCow2:
+#
+# @compat: compatibility level
+#
+# @lazy-refcounts: #optional on or off; only valid for compat >= 1.1
+#
+# Since: 1.7
+##
+{ 'type': 'ImageInfoSpecificQCow2',
+ 'data': {
+ 'compat': 'str',
+ '*lazy-refcounts': 'bool'
+ } }
+
+##
# @ImageInfoSpecific:
#
# A discriminated record of image format specific information structures.
@@ -219,6 +234,7 @@
{ 'union': 'ImageInfoSpecific',
'data': {
+ 'qcow2': 'ImageInfoSpecificQCow2'
} }
##
--
1.8.3.1
